What nutrient most commonly contributes to eutrophication?
A. phosphorus
B. nitrite
C. sulfide
D. methane
E. iron oxides
Answer: A
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In order for bacteriophage to be released from the host by a lysis mechanism, enzymes are required that
A. halt ATP synthesis. B. stabilize the cytoplasmic membrane and cell wall. C. degrade the host chromosome. D. damage the cell wall and cytoplasmic membrane.
A metabolic reaction will most likely reverse itself when the ____
a. pH is too high b. temperature is too low c. reactant concentration is too high d. product concentration is too high e. enzyme concentration is too high
The anatomical structure identified with the
letter "D" in the figure above is the a. myocardium. b. pulmonary veins. c. inferior vena cava. d. right atrium. e. heart apex
The endosymbiont theory is supported by all of the following evidence except for which statement?
A. Mitochondria are surrounded by two membranes. B. Mitochondria have a matrix. C. Mitochondria divide by binary fission. D. Mitochondria contain circular molecules of DNA. E. Mitochondrial ribosomes are similar to bacterial ribosomes.